just as president biden dealing with another foreign policy headaches on the other side of the world. he arrived in tokyo. he was met when he arrived there by caroline kennedy, the new ambassador. this as china is now threatening to declare unilaterally control over airspace long disputed with japan. joining me now with all these challenges, msnbc contributor, former adviser on iran to the white house ambassador dennis ross. thanks for being with us. lets talk about iran. president rouhani declared over the weekend in an interview with the "new york times" they have won the right to enrich, just as we in a hard fought battle with emrates, uae, nonproliferation effort talked them into foreswearing the right to enrich. others in the region are watching the way we handle iran. what do you think of these negotiations as far as they have gone so far? >> well, look, you do have a first step. the idea of having a first step agreement is not that it somehow has transformed the situation, not that it produced a breakthrough we're going to be confident we're going to transform uranium nuclear p